baber/WOPTO huggingface dataset:
Patent CA-2035620-C (CA)
Title: Method of liquefying natural gas
Inventor: NELSON WARREN
IPC: F25J1/02
Filed: 1991-02-04
Granted: 2000-05-30
Abstract: A method of producing a methane-rich liquid stream from a stream of natural gas predominantly consisting o~ methane and also containing nitrogen, entailing: a) supplying said natural gas stream at a pressure above atmospheric pressure, b) cooling and liquefying said natural gas stream using one or more refrigeration cycles, and c) expanding said liquefied natural gas to lower pressure in two or more stages in series, phase separating the gas and liquid phases produced during the expansion, thereby concentrating the nitrogen into the vapor phase, and producing a methane-rich liquefied natural gas.
Patent CA-2038472-C (CA)
Title: System for suppressing spread of error generated in differential coding
Inventor: YOSHIDA SHOJI
IPC: H03M13/00
Filed: 1991-03-18
Granted: 1995-12-05
Abstract: An error suppression system suppresses an error of a data sequence generated in a transmission path between a transmitting terminal and a receiving terminal.  The error suppression system includes a data coding circuit in the transmitting terminal for inserting a known bit at a predetermined position of the data sequence and for carrying out a difference logic conversion with respect to the data sequence, a differential coding circuit in the transmitting terminal for carrying out a sum logic conversion with respect to the data sequence which is received from the data coding circuit, a differential decoding circuit in the receiving terminal for carrying out a difference logic conversion with respect to the data sequence received from the differential coding circuit via the transmission path, and a data decoding circuit in the receiving terminal for carrying out a sum logic conversion with respect to the data sequence received from the differential decoding circuit and for restoring the known bit at the predetermined position of the data sequence.
Patent CA-2042372-C (CA)
Title: Pre-slit injection site
Inventor: DUDAR THOMAS E
IPC: A61M39/00
Filed: 1990-10-22
Granted: 1995-09-26
Abstract: A pre-slit injection site (710) includes a housing (712) with a flow path (728) therethrough. A first end (714) of the housing (712) carries a pre-slit septum (718). A second end (716) of the housing carries a coupling component (736) to adapt the site to standard vials. The coupling component (736), a vial adapter, includes an adapter spike (752) with openings (758) allowing for the drainage of fluid in the vial through the spike (752) and into the injection site (710). The vial adapter (736) is provided with a skirt housing unit (734, 744) which protects the adapter spike (752) in manufacturing and use. The skirt housing unit (734. 744) also provides fea-tures to lockingly engage the adapter (700) with injection site (710) to standard vials, despite dimensional variations in vial closures. Another embodiment of the coupling component (814) is a spike (816) having a barb feature (818) capable of in-sertion into a standard vial or port and resisting disengage-ment. A blunt cannula (730) is usable with the injection site (710) combined with the coupling components (736, 814).
Patent CA-2045052-C (CA)
Title: Disc recording/reproducing apparatus
Inventor: MAEDA YASUAKI
IPC: G11B7/00
Filed: 1991-06-20
Granted: 2000-10-24
Abstract: During recording the inputted data are sequentially written into a memory at one transfer rate and are read out at a second, higher transfer rate for recording on a record medium. The reading of the memory is such that data in a preset first amount are successively read from the memory to always ensure a write space in the memory which has a capacity which is higher than a predetermined second amount when the amount of the inputted data stored in the memory exceeds the first amount. During playback, the recorded data are reproduced at a second transfer rate, which is higher than a first transfer rate required for outputting the reproduced data, and are written in the memory. The thus written data are successively read out of the memory as reproduced output data at the first transfer rate.      The writing of the reproduced data to the memory is controlled so that a second amount of the reproduced data is written into the memory and an amount of reproduced data, not less than a first amount, is always stored in the memory when the amount of the reproduced data stored in the memory becomes not higher than the first given amount.
Patent CA-2046945-C (CA)
Title: Process to reduce propenyl polyethers in hydroxy-functional polyethers
Inventor: CHAVEZ JOHNNY JR
IPC: C08G2/28
Filed: 1991-07-12
Granted: 2001-07-10
Abstract: A process for reducing the amount of propenyl polyethers in hydroxy-functional polyethers comprising (1) contacting a neutral hydroxy-functional polyether, containing a propenyl polyether and water, and an acid catalyst soluble in the hydroxy-functional polyether under reaction conditions sufficient to convert at least a portion of the propenyl polyether to propionaldehyde; (2) contacting the product of step (1) and an epoxy compound to substantially scavenge the acid catalyst; and (3) stripping the product of step (2) to substantially remove the epoxy compound and the propionaldehyde. The resulting hydroxy-functional polyethers contain reduced amounts of propenyl polyethers and can therefore be used to prepare polyurethane foams having a reduced tendency to discoloration.
Patent CA-2049040-C (CA)
Title: Magnetic code reader with adjustable thresholds
Inventor: JONES PHILIP BRIAN BRANT
IPC: G07D7/20
Filed: 1990-09-19
Granted: 1996-02-06
Abstract: A reader for a coded discontinuous security thread in a security document comprises a multiplicity of reading channels each coupled to at least one magnetic transducing means (11, 40) for sensing along a track across the document and including processing circuits for forming a channel signal which exhibits signal excursions in response to the passage of the ends of each length of magnetic material. First and second comparators (55, 56) compare the channel signal with relatively positive and rela-tively negative thresholds respectively and a bistable switching means (59) is coupled to the comparators to provide a digital sig-nal. A reference comparator (64) controls an analog switch and diode pumps (70, 71) to adjust the thresholds in accordance with the amplitude of a signal excursion.
Patent CA-2052984-C (CA)
Title: Band with slotted wedge cams
Inventor: GUNDY WILLIAM P
IPC: F16L41/02
Filed: 1991-10-08
Granted: 2002-08-13
Abstract: A band assembly for effecting a seal particularly adapted for use in establishing a saint between a sewer pipe and a reinforced concrete manhole riser. The seal is affected by a tapered elastomeric tubular connector boot and a clamping band member kith an expansion mechanism. Wedge followers are loosely captured in the end sections of the clamping band and lie glens a circumferential center line on the band. Driving wedges extend along an axis transverse to the circumferential center line. The wedge followers and wedge drivers both have divergent edge sections that interengage and slide over one another as the driving wedges are dulled together by a clamping mechanism comprising, in a simplest form, a nut and bolt. As the driving wedges move toward the circumferential center line, they displace the wedge followers. The wedge followers engage the end portions of the clamping band and force it and the connector boot into a sealing relationship with the surrounding manhole riser:
Patent CA-2054202-C (CA)
Title: Starch derived shaped articles
Inventor: KNIGHT ADRIAN TIMOTHY
IPC: B29C48/76
Filed: 1990-06-01
Granted: 2000-08-15
Abstract: This invention relates to a method of producing starch derived shaped articles and in particular, a method of producing films derived from high amylose starch. In the method, a hot melt is prepared by heating under pressure a composition comprising a high amylosic material, or a derivative thereof, and sufficient water to provide a homogeneous melt for subsequent extrusion as a shaped article. The hot melt is subjected to an atmospheric or subatmospheric pressure immediately prior to or during extrusion so as to remove water from the hot melt prior to the formation of the shaped article. Preferably, the high amylosic material is derived from Goodman Fielder Mills Pty. Limited maize hybrids 55/77 or 65/88. The starch derived films produced by the method are particularly suitable for use in oxygen barrier laminates and as biodegradable mulch films.
Patent CA-2056389-C (CA)
Title: Blank cartridge for automatic gun
Inventor: DITTRICH WILLIAM A
IPC: F42B8/02
Filed: 1991-03-22
Granted: 2003-08-19
Abstract: A cartridge (10) for low-mass, frangible projectiles (60) comprises a cartridge case (12) having a primer (14) at its base and a sabot (30) or piston (30) at its mouth. The piston (30) can be provided with longitudinal orifices (44), diagonal orifices (44a), grooves (64) or any combination of orifices and grooves. The projectile (60) is inserted into a cylindrical recess (46) in the front portion of the sabot (30). The orifices (44) are in communication with this recess (46) to permit propellant gas to bleed through and accelerate the projectile (60) upon ignition. The case (12) and the sabot (30) can be provided respectively with a crimp (24) and a stepped portion (48) in order to limit travel of the sabot (30) out of the case.
Patent CA-2061859-C (CA)
Title: Cathode clamping circuit apparatus with digital control
Inventor: YAMATE KAZUNORI
IPC: H04N5/16
Filed: 1992-02-26
Granted: 1996-01-16
Abstract: A cathode clamping circuit apparatus with digital control comprises: a variable voltage source for generating the bright voltage and cathode clamping circuits for producing dc component voltages for color component signals respectively.  Each of the cathode clamping circuits has: a capacitor for coupling one of color component signals to an output terminal; the shunt regulator for generating the sub-bright voltage in accordance a current signal, the bright and the sub-bright voltages being summed to produce the dc component voltages by connecting the variable voltage source to the shunt regulator in series; the variable current source for producing the current signal in accordance with a voltage signal; a d/a converter responsive to a control signal for producing the voltage signal; a transistor for clamping the color component signal with the sum voltage of the bright voltage and sub-bright voltages in response to the clamp pulse produced from the color component signals  R, G. and B and the vertical and horizontal synchronizing pulse accompanied with the color component signals.  Removal of variable resistors eliminates poor contact therein and contributes automatization of the cathode clamping circuit.
Patent CA-2062069-C (CA)
Title: Bridge arrangement which is individually adapted to elements implanted in the dentine, joints etc.
Inventor: BRAJNOVIC ISIDOR
IPC: A61C8/00
Filed: 1992-02-28
Granted: 2000-10-24
Abstract: A bridge can be individually constructed to match elements implanted in dentine or the like and/or parts secured in the elements. The bridge is made up of, on the one hand, two or more module units (14) which can be attached to the elements or the parts and which have further surfaces (4) separate from the surfaces of attachment to the elements or parts, and, on the other hand, an elongate, curved element (8) which can be secured in the module units at the said surfaces (4). The elongate, curved element (8) is designed with a profile and with a quality of titanium which permits bending without essentially impairing the strength of the element (8) in the bridge. The profile is also designed to form part of a holding function for a prosthesis part secured in the bridge, for example a tooth/tooth part (63).
Patent CA-2063659-C (CA)
Title: Drier for pasta
Inventor: BOTTINO PIER C
IPC: F26B15/22
Filed: 1992-03-20
Granted: 1994-09-20
Abstract: A  drier  comprises   a  plurality  of  structurally independent drying chambers (2 to 4) in each of which a respective climate, which does not interfere with that of the other chambers, is created and controlled.   The chambers (2 to 4), each of which is equipped with its own conveyor (13) for pasta-holders (22), are connected by tunnels  (36)  in which devices  (37)  transfer the holders (22) from one chamber to another.
Patent CA-2066711-C (CA)
Title: Dual mode automatic gain control
Inventor: RICH RANDALL WAYNE
IPC: H04B1/16
Filed: 1991-07-18
Granted: 1996-09-03
Abstract: A gain control system for controlling signal levels of the signal received by a receiver.  The gain control system is operable to control the signal levels of the signal when the signal is  comprised of either a conventional,  constant envelope signal,  such as an FM signal, or a non-constant   envelope signal, such as a TDMA  composite modulated signal.  The gain control system may be  advantageously  embodied in a  dual-mode radiotelephone  operable to receive both  conventional, FM signals and TDMA,  composite modulated  signals.
Patent CA-2069034-C (CA)
Title: Cordless telecommunication network with dynamically assigned unique timeslots for zone registration polling
Inventor: NAGASHIMA NORIAKI
IPC: H04W72/10
Filed: 1992-05-20
Granted: 1996-07-16
Abstract: In a network for serving cordless stations located in microcells, speech channels are divided into channel groups such that no intermodulation products occur among the channels of each group. Base units are located respectively in the microcell sites to establish two-way speech channels with their cordless stations. Each base unit generates and updates priority values of the channel groups as representations of usages of all channels through a statistical process. Depending on the updated priority values different channel groups are uniquely assigned to the base units. Timeslots are defined uniquely by the respective base units using the identifiers of the assigned channel groups for broadcasting zone-registration polling signals during the defined timeslots to elicit a zone registration response from each cordless station.
Patent CA-2071582-C (CA)
Title: Device and unit for coating cap-shaped substrates
Inventor: ETZKORN HEINZ-WERNER
IPC: C03C17/00
Filed: 1992-06-18
Granted: 1999-12-21
Abstract: To coat several cap-shaped substrates simultaneously in an economical way with the same and high quality, several coating chambers are connected into a cap coating station by a symmetrical gas line system with a common gas generator and by another gas line system with a common vacuum pump. The gas lines have a cross sectional area QA(x) and a cross sectional form QF(x) which as a function of the distance x from the gas generator or from the vacuum pump are substantially the same. In this way, the same flow conditions are assured in all coating chambers. The gas line systems can be formed by precision pipes or by a stack of solid plates, in which gas ducts are introduced by boring or milling. Several cap coating stations, which are connected by suitable symmetrical gas line systems with a common vacuum pump and a common gas generator, can be combined to form a unit.
Patent CA-2076599-C (CA)
Inventor: GIRARD LAURENT
IPC: F16F15/02
Filed: 1992-08-21
Granted: 2001-08-14
Abstract: - La présente invention concerne un dispositif de liaison élastique entre deux pièces (3,5) pour filtrer les excitations vibratoires qui sont transmises de l'une à l'autre, comportant -au moins un élément de liaison (7) entre lesdites pièces (3,5) comprenant un organe (8) de transmis-sion de l'effort statique entre lesdites pièces (3,5), et un actionneur (9) associé audit organe de transmission (8), -au moins un moyen de mesure (10) d'une grandeur physique représentative desdites excitations vibra-toires, et susceptible de fournir des premiers signaux correspondants, et -des moyens électroniques de traitement (12) desdits premiers signaux pour convertir ceux-ci en des seconds signaux de commande dudit actionneur (9). - Selon l'invention, ledit moyen de mesure (10) est monté sur ledit élément de liaison (7).
Patent CA-2080286-C (CA)
Inventor: MEILHON DANIEL
IPC: B65D71/08
Filed: 1992-10-09
Granted: 2002-10-29
Abstract: The invention provides a shrinkable thermoplastic film for packaging purposes, more particularly for bundling unit packs of individual objects to be packaged such as tinned food, cans, bottles or the like, and a method for producing it; the film is formed of at least two thermoplastic resins and tears in a direction substantially perpendicular to its direction of extrusion, along a substantially straight line.
Patent CA-2080551-C (CA)
Title: Light beam heating system
Inventor: FUJII KOJI
IPC: B23K26/12
Filed: 1992-10-14
Granted: 1997-03-25
Abstract: A light beam heating system for performing local heating includes a source for emitting light, and an optical lens assembly for converging the light from the source onto an object to be heated.  A cylinder supplies shielding gas towards the object through a regulator, a valve, and a nozzle. During the light heating operation, the oxygen concentration of the atmosphere around the object is maintained at less than 5%.  The shielding gas can be supplied to the object through a temperature regulator so that it is heated to a desired temperature prior to being directed onto the object.
Patent CA-2082897-C (CA)
Title: Graphic data processing system
Inventor: IWAMURA KAZUAKI
IPC: G06F3/033
Filed: 1992-11-13
Granted: 1999-06-08
Abstract: This invention relates to a graphic data processing system, and is more particularly directed to provide an easy-to-operate system and displaying method thereof, for generating scene data from map data and retrieving and displaying attributes containing guide information of ground objects in a scene.  In the first place, when a visual point is directed from above to below, a planar map is displayed, and as the visual point shifts in a horizontal direction, a three-dimensional scene image is generated and displayed from a map.  Secondly, a three-dimensional window is displayed in a display, and graphic data is displayed inside the window.
Patent CA-2092828-C (CA)
Title: Swimming aid
Inventor: LEE TREVOR MARC
IPC: A63B31/12
Filed: 1991-09-30
Granted: 2005-03-08
Abstract: The present invention relates to an improved swimming aid wherein the aid comprises a fin (2) which is flexible and is adapted in use to be fitted to a portion of the anatomy of the user, for example, the shin (4). In use the fin (2) overlays the portion of the anatomy of the user and extends outwardly towards or beyond both sides of that portion which it overlays, such that during the power stroke of the user said fin (2) extends outwardly towards or beyond both sides of the portion of the user to an extended position (18), but during the return stroke the fin member (2) adopts a substantially collapsed position (17) to reduce drag by the flexible fin member (2).
Patent CA-2093560-C (CA)
Title: Fluid container
Inventor: HONDA MINORU
IPC: A61J1/20
Filed: 1993-04-07
Granted: 2005-06-07
Abstract: A fluid container comprises a drug container, a deformable solvent container, a double-pointed hollow needle having a sharp piercing edge at each end and being arranged between the drug container and the solvent container, and a guide capsule with a cap rotatably mounted thereon. Rotary motion of the cap is converted to a linear motion of the drug container to push the drug container toward the solvent container in cooperation with the cap and the guide capsule, so that fluid communication is established between two containers through the needle.
Patent CA-2093673-C (CA)
Title: Electrical connectors
Inventor: LINDEMAN RICHARD J
IPC: H01R12/50
Filed: 1992-01-29
Granted: 2002-06-25
Abstract: Connector (10-15) are provided for propagation of electrical signals in a plurality of closely spaced propagation paths, such as between circuits connected to conductive pads of circuit boards (17-20), each circuit presenting a certain characteristic im-pedance at a pad connected thereto. For example, each connector (11) includes a plurality of resilient and electrically conductive signal-propagating interconnect means (52, 54) having opposite, ends engageable with conductive pads on a pair of the circuit boards. The interconnect means are supported by insulating means (30) of a support structure which also provides conductive ground means (49) adjacent relation to the conductive interconnect means. The conductive ground means are arranged for con-nection to grounding elements of the circuit boards. The configuration and characteristics of the ground conductor means and the insulating means in rltion to each signal-propagating interconnect means are such as to obtain a certain characteristic imped-ance for matching the characteristic impedances of circuits interconnected by each signal-propagating interconnect means.
Patent CA-2099458-C (CA)
Inventor: MARTIN ROY K
IPC: F16F15/139
Filed: 1993-06-30
Granted: 1997-10-21
Abstract: A torque clipping mechanism embodying the concepts of the present invention is adapted to obviate torque spikes from being imparted to the transmission of a vehicle by the crankshaft of an engine during the start-up and shut-down procedures for that engine.  The torque clipping mechanism operates in conjunction with a torque transfer device that is operatively connected between the crankshaft, which delivers torque from the engine, and the rotatable input shaft of a vehicular transmission.  A spring is employed to effect the application of the torque transfer device, but the spring allows slippage of the torque transfer device upon the application of a predetermined torsional force to the torque transfer device.  Hydraulic fluid acting under centrifugal force is employed to preclude slippage when the rotational speed of the power output shaft exceeds a predetermined rate.
Patent CA-2100758-C (CA)
Inventor: SCHMIDT STEVEN L
IPC: B29C45/16
Filed: 1992-01-10
Granted: 1998-07-28
Abstract: L'objet de la présente invention est un contenant en plastique multicouches (50) pouvant être utilisé avec un système de distribution à pression négative ou positive (10); le contenant en question comporte un corps intégral et une couche intérieure contractile (58) qui se vide de son contenu en s'éloignant de la couche extérieure (59). Le contenant en question est moulé par soufflage d'une préforme multicouche; une ouverture pratiquée à travers le fond (57) du contenant permet l'injection d'air qui servira à séparer la couche intérieure de la couche extérieure. De préférence, la couche intérieure est délaminée à l'avance au cours du procédé de fabrication afin d'en faciliter la séparation ultérieure pour les besoins de l'utilisation. Pour les systèmes de distribution à dépression, des orifices d'admission d'air sont percés aux points de déformation maximale du contenant afin de prévenir la contraction de la couche extérieure.
Patent CA-2102847-C (CA)
Inventor: QUINN EDWIN J
IPC: B29C67/00
Filed: 1993-11-10
Granted: 2001-07-31
Abstract: A vinyl heat welding rod for seam sealing vinyl resilient flooring, whether in sheet or tile form, is used to obtain a monolithic appearing surface. This rod is specifically made to duplicate the appearance of the flooring material.      For a chip-image flooring structure, a sheet of multicolored chips having a similar, but different formulation from that of the flooring material is prepared and the sheet is cut into suitable strips, heat pressed in a rod mold, end adhered or further molded to form the desired length, and used as a vinyl heat welding rod for sealing seams in flooring. Thus, the chip pattern is evident in the seam area and does not appear different when compared to the adjacent surface.